Decidability of Equivalence of Aggregate Count-Distinct Queries.
Babak Bagheri HaririVal TannenPublished in: CoRR (2015)
Keyphrases
- query containment
- aggregate functions
- query processing
- conjunctive queries
- query language
- aggregation functions
- database
- transitive closure
- query answering
- range aggregate queries
- efficient processing
- sum queries
- response time
- decision procedures
- recursive queries
- answering queries
- information retrieval
- query formulation
- query evaluation
- range queries
- web search engines
- description logics
- statistical databases
- aggregate queries
- query rewriting
- query logs
- aggregate views
- relational model
- probabilistic databases
- data sources
- web pages